Home / 21,369.51-29,489.81-11,810.07

Finding the Fourth Proportional to 21,369.51, 29,489.81 and 11,810.07

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Solution

The fourth proportional to 21,369.51, 29,489.81 and 11,810.07 is: 16,297.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,369.51 : 29,489.81 = 11,810.07 : x
  2. Step 2: Convert to fraction form
    21,369.51/29,489.81 = 11,810.07/x
  3. Step 3: Cross multiply
    21,369.51x = 29,489.81 × 11,810.07
  4. Step 4: Simplify right side
    21,369.51x = 348,276,749.91
  5. Step 5: Solve for x
    x = 348,276,749.91/21,369.51
  6. Step 6: Final answer
    x = 16,297.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.